For Watercare’s $1.2 billion dollar Central Interceptor project, the longest underground wastewater tunnel in Auckland, the giant tunnel boring machine Hiwa-i-te-Rangi  was lowered 40 metres down a shaft by crane, below sea level at the Māngere pump station on Tuesday afternoon.

https://www.stuff.co.nz/auckland/300340078/giant-boring-machine-lowered-to-dig-the-longest-underground-wastewater-tunnel-in-nz